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Vibrating diaphragm of sound generating device and sound generating device

A sounding device and membrane layer technology, applied in the direction of plane diaphragm, polymer material diaphragm, diaphragm structure, etc., can solve problems such as abnormal sounding of speakers, easy yield strain, and changes in the symmetry of diaphragm compliance. To achieve the effect of reducing noise

Pending Publication Date: 2020-02-18
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high cross-linking density of engineering plastics, although its elastic modulus is high, it is easy to produce yield strain at low strain
When the vibration amplitude of the diaphragm is too large, or when it is subjected to an external force, the ring shape of the diaphragm is prone to irreversible bending, the symmetry of the compliance of the diaphragm changes, and the sound of the speaker is abnormal or directly fails.

Method used

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  • Vibrating diaphragm of sound generating device and sound generating device
  • Vibrating diaphragm of sound generating device and sound generating device
  • Vibrating diaphragm of sound generating device and sound generating device

Examples

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Embodiment Construction

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0035] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0036] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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PUM

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Abstract

The invention discloses a vibrating diaphragm of a sound generating device and the sound generating device. The vibrating diaphragm includes a polyurethane rubber film layer, and polyurethane rubber includes a block polymer formed by alternately arranging soft segment parts and hard segment parts, wherein the soft segment parts include a polyol and the hard segment parts include isocyanate and a chain extender; and the polyurethane rubber is represented by a structural formula shown in the specification, wherein R is the chain extender, R1 is the polyol, and n is a natural number.

Description

technical field [0001] The present invention relates to the technical field of electroacoustic conversion, and more particularly, to a diaphragm of a sound generating device and the sound generating device. Background technique [0002] Most of the existing micro-speaker diaphragms use high-modulus engineering plastics (for example, PEEK) as the raw material of the diaphragm; Material. The above-mentioned vibrating membrane usually needs to be formed by heating and shaping by means of hot pressing, air pressure, etc., to form a predetermined ring structure. The ring structure is used to provide the compliance of the diaphragm, thereby adjusting the vibration state of the diaphragm. [0003] The existing polymer diaphragm can have a better vibration state within a certain vibration range after being molded into a predetermined shape. Due to the high crosslink density of engineering plastics, although their elastic modulus is high, yield strain is prone to occur at low stra...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/69C08G18/36C08G18/48C08G18/32C08K3/06C08K3/04C08K3/36C08K3/34
CPCH04R31/00C08G18/664C08G18/6674C08G18/42C08G18/69C08G18/36C08G18/48C08G18/3206C08K3/06C08K3/04C08K3/36C08K3/346H04R2307/025H04R7/06H04R7/125C08J5/18C08J2375/06C08J2375/08C08K3/013C08L75/04C08K5/14C08K5/29C08K5/098B32B27/40H04R7/10H04R9/02H04R9/06C08J2379/08H04R9/025H04R31/003
Inventor 王述强凌风光李春刘春发
Owner GOERTEK INC
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